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Theorem noinfbnd1lem4 33856
Description: Lemma for noinfbnd1 33859. If 𝑈 is a prolongment of 𝑇 and in 𝐵, then (𝑈‘dom 𝑇) is not undefined. (Contributed by Scott Fenton, 9-Aug-2024.)
Hypothesis
Ref Expression
noinfbnd1.1 𝑇 = if(∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥, ((𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥) ∪ {⟨dom (𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥), 1o⟩}), (𝑔 ∈ {𝑦 ∣ ∃𝑢𝐵 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣𝐵𝑢 <s 𝑣 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥𝑢𝐵 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣𝐵𝑢 <s 𝑣 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢𝑔) = 𝑥))))
Assertion
Ref Expression
noinfbnd1lem4 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) → (𝑈‘dom 𝑇) ≠ ∅)
Distinct variable groups:   𝐵,𝑔,𝑢,𝑣,𝑥,𝑦   𝑣,𝑈   𝑥,𝑢,𝑦   𝑔,𝑉   𝑥,𝑣,𝑦,𝑈
Allowed substitution hints:   𝑇(𝑥,𝑦,𝑣,𝑢,𝑔)   𝑈(𝑢,𝑔)   𝑉(𝑥,𝑦,𝑣,𝑢)

Proof of Theorem noinfbnd1lem4
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 simpl1 1189 . . . . . . . 8 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → ¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥)
2 simpl2 1190 . . . . . . . 8 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝐵 No 𝐵𝑉))
3 simprl 767 . . . . . . . 8 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝑤𝐵)
4 simpl3 1191 . . . . . . . . 9 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇))
5 simp2l 1197 . . . . . . . . . . . . 13 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) → 𝐵 No )
65sselda 3917 . . . . . . . . . . . 12 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ 𝑤𝐵) → 𝑤 No )
7 simp3l 1199 . . . . . . . . . . . . . 14 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) → 𝑈𝐵)
85, 7sseldd 3918 . . . . . . . . . . . . 13 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) → 𝑈 No )
98adantr 480 . . . . . . . . . . . 12 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ 𝑤𝐵) → 𝑈 No )
10 sltso 33806 . . . . . . . . . . . . 13 <s Or No
11 soasym 5525 . . . . . . . . . . . . 13 (( <s Or No ∧ (𝑤 No 𝑈 No )) → (𝑤 <s 𝑈 → ¬ 𝑈 <s 𝑤))
1210, 11mpan 686 . . . . . . . . . . . 12 ((𝑤 No 𝑈 No ) → (𝑤 <s 𝑈 → ¬ 𝑈 <s 𝑤))
136, 9, 12syl2anc 583 . . . . . . . . . . 11 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ 𝑤𝐵) → (𝑤 <s 𝑈 → ¬ 𝑈 <s 𝑤))
1413impr 454 . . . . . . . . . 10 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → ¬ 𝑈 <s 𝑤)
153, 14jca 511 . . . . . . . . 9 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤𝐵 ∧ ¬ 𝑈 <s 𝑤))
16 noinfbnd1.1 . . . . . . . . . 10 𝑇 = if(∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥, ((𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥) ∪ {⟨dom (𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥), 1o⟩}), (𝑔 ∈ {𝑦 ∣ ∃𝑢𝐵 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣𝐵𝑢 <s 𝑣 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥𝑢𝐵 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣𝐵𝑢 <s 𝑣 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢𝑔) = 𝑥))))
1716noinfbnd1lem2 33854 . . . . . . . . 9 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ ((𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇) ∧ (𝑤𝐵 ∧ ¬ 𝑈 <s 𝑤))) → (𝑤 ↾ dom 𝑇) = 𝑇)
181, 2, 4, 15, 17syl112anc 1372 . . . . . . . 8 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤 ↾ dom 𝑇) = 𝑇)
1916noinfbnd1lem3 33855 . . . . . . . 8 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑤𝐵 ∧ (𝑤 ↾ dom 𝑇) = 𝑇)) → (𝑤‘dom 𝑇) ≠ 1o)
201, 2, 3, 18, 19syl112anc 1372 . . . . . . 7 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤‘dom 𝑇) ≠ 1o)
2120neneqd 2947 . . . . . 6 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑤𝐵𝑤 <s 𝑈)) → ¬ (𝑤‘dom 𝑇) = 1o)
2221expr 456 . . . . 5 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ 𝑤𝐵) → (𝑤 <s 𝑈 → ¬ (𝑤‘dom 𝑇) = 1o))
23 imnan 399 . . . . 5 ((𝑤 <s 𝑈 → ¬ (𝑤‘dom 𝑇) = 1o) ↔ ¬ (𝑤 <s 𝑈 ∧ (𝑤‘dom 𝑇) = 1o))
2422, 23sylib 217 . . . 4 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ 𝑤𝐵) → ¬ (𝑤 <s 𝑈 ∧ (𝑤‘dom 𝑇) = 1o))
2524nrexdv 3197 . . 3 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) → ¬ ∃𝑤𝐵 (𝑤 <s 𝑈 ∧ (𝑤‘dom 𝑇) = 1o))
26 breq2 5074 . . . . . . 7 (𝑥 = 𝑈 → (𝑦 <s 𝑥𝑦 <s 𝑈))
2726rexbidv 3225 . . . . . 6 (𝑥 = 𝑈 → (∃𝑦𝐵 𝑦 <s 𝑥 ↔ ∃𝑦𝐵 𝑦 <s 𝑈))
28 simpl1 1189 . . . . . . 7 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → ¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥)
29 dfral2 3164 . . . . . . . 8 (∀𝑥𝐵𝑦𝐵 𝑦 <s 𝑥 ↔ ¬ ∃𝑥𝐵 ¬ ∃𝑦𝐵 𝑦 <s 𝑥)
30 ralnex 3163 . . . . . . . . 9 (∀𝑦𝐵 ¬ 𝑦 <s 𝑥 ↔ ¬ ∃𝑦𝐵 𝑦 <s 𝑥)
3130rexbii 3177 . . . . . . . 8 (∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ↔ ∃𝑥𝐵 ¬ ∃𝑦𝐵 𝑦 <s 𝑥)
3229, 31xchbinxr 334 . . . . . . 7 (∀𝑥𝐵𝑦𝐵 𝑦 <s 𝑥 ↔ ¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥)
3328, 32sylibr 233 . . . . . 6 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → ∀𝑥𝐵𝑦𝐵 𝑦 <s 𝑥)
34 simpl3l 1226 . . . . . 6 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → 𝑈𝐵)
3527, 33, 34rspcdva 3554 . . . . 5 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → ∃𝑦𝐵 𝑦 <s 𝑈)
36 breq1 5073 . . . . . 6 (𝑦 = 𝑤 → (𝑦 <s 𝑈𝑤 <s 𝑈))
3736cbvrexvw 3373 . . . . 5 (∃𝑦𝐵 𝑦 <s 𝑈 ↔ ∃𝑤𝐵 𝑤 <s 𝑈)
3835, 37sylib 217 . . . 4 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → ∃𝑤𝐵 𝑤 <s 𝑈)
39 simpl2l 1224 . . . . . . . . . 10 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → 𝐵 No )
4039adantr 480 . . . . . . . . 9 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝐵 No )
41 simprl 767 . . . . . . . . 9 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝑤𝐵)
4240, 41sseldd 3918 . . . . . . . 8 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝑤 No )
4334adantr 480 . . . . . . . . 9 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝑈𝐵)
4440, 43sseldd 3918 . . . . . . . 8 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝑈 No )
45 simpl2 1190 . . . . . . . . . . 11 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → (𝐵 No 𝐵𝑉))
4616noinfno 33848 . . . . . . . . . . 11 ((𝐵 No 𝐵𝑉) → 𝑇 No )
4745, 46syl 17 . . . . . . . . . 10 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → 𝑇 No )
4847adantr 480 . . . . . . . . 9 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝑇 No )
49 nodmon 33780 . . . . . . . . 9 (𝑇 No → dom 𝑇 ∈ On)
5048, 49syl 17 . . . . . . . 8 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → dom 𝑇 ∈ On)
51 simpll1 1210 . . . . . . . . . 10 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → ¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥)
52 simpll2 1211 . . . . . . . . . 10 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝐵 No 𝐵𝑉))
53 simpll3 1212 . . . . . . . . . 10 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇))
54 simprr 769 . . . . . . . . . . . 12 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → 𝑤 <s 𝑈)
5542, 44, 12syl2anc 583 . . . . . . . . . . . 12 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤 <s 𝑈 → ¬ 𝑈 <s 𝑤))
5654, 55mpd 15 . . . . . . . . . . 11 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → ¬ 𝑈 <s 𝑤)
5741, 56jca 511 . . . . . . . . . 10 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤𝐵 ∧ ¬ 𝑈 <s 𝑤))
5851, 52, 53, 57, 17syl112anc 1372 . . . . . . . . 9 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤 ↾ dom 𝑇) = 𝑇)
59 simpl3r 1227 . . . . . . . . . 10 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → (𝑈 ↾ dom 𝑇) = 𝑇)
6059adantr 480 . . . . . . . . 9 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑈 ↾ dom 𝑇) = 𝑇)
6158, 60eqtr4d 2781 . . . . . . . 8 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤 ↾ dom 𝑇) = (𝑈 ↾ dom 𝑇))
62 simplr 765 . . . . . . . 8 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑈‘dom 𝑇) = ∅)
63 nogt01o 33826 . . . . . . . 8 (((𝑤 No 𝑈 No ∧ dom 𝑇 ∈ On) ∧ ((𝑤 ↾ dom 𝑇) = (𝑈 ↾ dom 𝑇) ∧ 𝑤 <s 𝑈) ∧ (𝑈‘dom 𝑇) = ∅) → (𝑤‘dom 𝑇) = 1o)
6442, 44, 50, 61, 54, 62, 63syl321anc 1390 . . . . . . 7 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ (𝑤𝐵𝑤 <s 𝑈)) → (𝑤‘dom 𝑇) = 1o)
6564expr 456 . . . . . 6 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ 𝑤𝐵) → (𝑤 <s 𝑈 → (𝑤‘dom 𝑇) = 1o))
6665ancld 550 . . . . 5 ((((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) ∧ 𝑤𝐵) → (𝑤 <s 𝑈 → (𝑤 <s 𝑈 ∧ (𝑤‘dom 𝑇) = 1o)))
6766reximdva 3202 . . . 4 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → (∃𝑤𝐵 𝑤 <s 𝑈 → ∃𝑤𝐵 (𝑤 <s 𝑈 ∧ (𝑤‘dom 𝑇) = 1o)))
6838, 67mpd 15 . . 3 (((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) ∧ (𝑈‘dom 𝑇) = ∅) → ∃𝑤𝐵 (𝑤 <s 𝑈 ∧ (𝑤‘dom 𝑇) = 1o))
6925, 68mtand 812 . 2 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) → ¬ (𝑈‘dom 𝑇) = ∅)
7069neqned 2949 1 ((¬ ∃𝑥𝐵𝑦𝐵 ¬ 𝑦 <s 𝑥 ∧ (𝐵 No 𝐵𝑉) ∧ (𝑈𝐵 ∧ (𝑈 ↾ dom 𝑇) = 𝑇)) → (𝑈‘dom 𝑇) ≠ ∅)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 395  w3a 1085   = wceq 1539  wcel 2108  {cab 2715  wne 2942  wral 3063  wrex 3064  cun 3881  wss 3883  c0 4253  ifcif 4456  {csn 4558  cop 4564   class class class wbr 5070  cmpt 5153   Or wor 5493  dom cdm 5580  cres 5582  Oncon0 6251  suc csuc 6253  cio 6374  cfv 6418  crio 7211  1oc1o 8260   No csur 33770   <s cslt 33771
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pr 5347  ax-un 7566
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-int 4877  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-ord 6254  df-on 6255  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-1o 8267  df-2o 8268  df-no 33773  df-slt 33774  df-bday 33775
This theorem is referenced by:  noinfbnd1lem5  33857  noinfbnd1lem6  33858
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